Sorry,a couple of spelling mistakes in my reply of the 11th: I spelled Herzberg with a t, and the village is Mouzon, not Monzon. The Beaumont is the one in Argonne. I have now tried to check out the coat of arms, but it does not match any of those of the Grafen on your list. I think its got to be a canting design as you thought ,but more suitable for hanging outside The Bricklayers Arms than on a shield of any of the families of the candidates in your list! Not nearly elegant or elaborate enough, too Municipal. Its quite a puzzle,and I would be very interested to read what conclusions you come to. In the meantime I will try to find out some more.